Heavy damping mechanism sometimes incorporated in vibration control technologies and, particularly, in base isolation devices, may be considered a valuable source of suppressing vibrations thus enhancing a building's seismic performance. However, for the very pliant systems such as base isolated structures, with a relatively low bearing stiffness but with an high damping, the so-called "damping force" may turn out the main pushing force at a strong earthquake [2]. This finding created a theoretical ground in earthquake engineering for a damping-disengaged base isolation technology called Earthquake protector [3].

A shake-table video of concurrent shake-table experiments with two identical and kinematically equivalent to their 12-story prototype building models is presented at [4]. The right model is resting on Earthquake Protectors, while the left one, caught at the time of its crash, is fixed to the shake-table platen.